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Home » (a) Define the following in terms of gain or loss of hydrogen with one example each:(i) Oxidation (ii) reduction (b) When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.
(a) Define the following in terms of gain or loss of hydrogen with one example each:
(i) Oxidation (ii) reduction
(b) When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.
CBSE | Chemical Reactions and Equations | Chemistry | Class 10 | Lakhmir Singh
(a) Define the following in terms of gain or loss of hydrogen with one example each:
(i) Oxidation (ii) reduction
(b) When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.

Oxidation is the removal of hydrogen and reduction is the addition of hydrogen.

This is demonstrated by an example as foloows:

Fe2O3 + 3CO → 2Fe + 3CO2

In the reaction above, Fe got reduced while Carbon got oxidized by gaining oxygen.

(b) Chemical equation for burning of magnesium ribbon:

2Mg + O2→ 2MgO

(i) Substance oxidized is Mg (ii) Substance reduced is O2

i

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